In 1928 the Western Mail Ltd amalgamated with David Duncan & Sons, who published the South Wales Daily News and the South Wales Echo, which was established in 1884.[2] The merged company became Western Mail and Echo Ltd. and because of the merger Evening Express and South Wales Daily News closed.[2] In 1960, the newspapers left St Mary Street and moved to Thomson House, Cardiff.[2]

On 1 October 2007 Western Mail and Echo Ltd changed its name to Media Wales,[3] and in 2008 Media Wales moved from Thomson House in Havelock Street to a newly-built office block, named Six Park Street, next to the old building.[4]

The printing plant relocated to Portmanmoor Road, where it printed the Western Mail, South Wales Echo, South Wales Evening Post and the Llanelli Star. It also printed other independently-owned titles, including the Pembrokeshire Herald.[5] In November 2016, the parent company Trinity Mirror, announced its plans to close the printing plant and transfer all printing to either its printing plants in Birmingham or Watford.[5]

Cardiff Online is Media Wales' portal for news from the country's capital. The different sections include information on local community news, yourCardiff, lifestyle, Parklife (local sport), Cardiff Blues, Cardiff City F.C. and Cardiff Devils.[6]

Pizzaman is Wales’ first online drama series, broadcast by WalesOnline. The mini-series was created by former film students Teilo Trimble and James Robson, who took inspiration from Robson’s stint as a takeaway driver following graduation.

It featured 15 short films ranging between four and eight minutes, all shot in different locations around Cardiff, which follow student deliveryman Taj. Each episode is named after a district of Cardiff.[7]